Location: Hybrid (Munich-based team, 3 days/week in office); Workload: Full-time; Start: ASAP
About us
Hi, we are Jessy Works – an AI startup rethinking accounting from the ground up.
While accounting firms are struggling to find qualified staff, we build the solution: AI-powered accounting on autopilot .
Our AI assistants handle bookkeeping, routine workflows, and client communication – dramatically expanding the capacity of tax advisory firms.
Now we are looking for a Senior Software Engineer who wants to take real ownership, ship production-ready AI systems, and help scale a mission-critical product.
If you enjoy building stable systems, working close to product and founders, and using AI as a first-class development tool, keep reading.
Tasks
Build & own production systems across backend, frontend, and application layers
Design, develop, and operate AI-powered features, including GenAI pipelines and AI inference workloads
Work end-to-end : from architecture and implementation to go-live, monitoring, and continuous improvement
Develop primarily in Python and TypeScript, with Java experience as a strong plus
Ship on AWS Serverless infrastructure, using tools like Terraform and Kubernetes (K8s)
Own DevOps responsibilities : CI/CD, infrastructure-as-code, observability, and system reliability
Use AI-assisted coding workflows (e.g. Aider Chat, GitHub Copilot) to move fast without sacrificing quality
Actively contribute to sprint planning, refinement, and execution
Identify and resolve impediments independently – you don’t wait for perfect instructions
Collaborate closely with product, customers, founders, and AI stakeholders to turn ideas into scalable solutions
Support product launches and live operations, ensuring stability and performance in production
Requirements
Senior-level experience as a Software Engineer (several years in production environments)
Strong hands-on expertise in Python (must-have)
Very good knowledge of TypeScript / JavaScript
Java experience is a strong plus
Solid background in AI / GenAI systems, including AI inference
Experience with AWS (Serverless), Terraform, and Kubernetes (K8s)
DevOps mindset : you build it, you run it
Experience building stable, scalable, and maintainable production systems
At least one full product go-live you were actively involved in
Experience with product launches and operating live systems
Strong understanding of backend, frontend, and application architecture
Comfortable understanding Windows OS session management
Proven experience in sprint planning, refinement, and agile execution
Highly self-driven, pragmatic, and solution-oriented
German language skills at minimum C1 level (spoken & written) -> You will have customer contact
Benefits
Direct collaboration with the founding team and key decision-makers
Ownership and real impact on a core AI product
Modern tech stack, AI-first development culture, and zero legacy baggage
A product with real customer value in a massive, underserved market
Hybrid setup with 3 office days per week in Munich
Competitive compensation and long-term growth opportunities
Fast learning curve, high trust, and minimal bureaucracy
And yes – we celebrate wins: pizza & champagne included
How to apply
Short CV + LinkedIn profile
30-minute intro call – mutual fit & expectations
Final fit call – scope, role, and start date
No cover letter.
No corporate nonsense.
Just honest engineering, real responsibility, and building something that matters.
If you want to help shape the future of AI-powered accounting with a strong founding team – we’d love to hear from you.
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